Motor for talking-machines.



J. A R BBITT". MOTOR FOR TALKING MACHINES.

"APPLICATION FILED FEB.28, 1910.

- I Illa-r,

H "H", llll l'lllllllll, I Illk that a convenient and inexpensive form of train of gears, the use of heavy castings is a citizen-of the United States, residing at 3 wide an improved form of spring-motor for this use which has ample power, which occu- -opening therein through which extends a JAMEsn. RABBITT, or YoxoHnMA, JAPAN.

MOTOR FQR rnnxmamsonmns.

Specification of Letters Patent. Patented June 27. 1911.

Application filed Fcbruary 28, 1910. Serial No. 546,271.

To all whom 'it mag concern Be it known that I, JAMES A. Rnnsrr'r,

Yokohama, in the Empire of Japan, have invented certain new and useful Improveinents in:.Motors for Talking-Machines, of which the following is a description.

'This invention relates to motors adapted for use in driving the record-holder of a talking-machine, and its object is to pro- -pies small "space and is of such simple construction that it may be manufactured at small cost. 1

My invention contemplates the-provision of a spring-motor having a plurality of springs to furnish the motive power, these being compactly arranged and so connected that the power of one is added tothat of another. The improved construction is such winding deviceis employed not requiring a avoided, bevel-gears connecting the motor to the record-holder are eliminated, and an adjustable ball-bearing is provided for the main shaft to insure easy running. The preferred embodiment of the invention is illustrated in the accompanying drawing, in whicha Figure 1 is a central sectional view of the motor, Fig. 2 is a view in section on line ?2 of Fig. 1 showing the winding mecha-'" nism, and Figs. 3 and 4 are detail views showing modified forms of governors.

Referring to these drawings, 11 indicates the support for the motor, as the top of the motor-box of'a talking machine having are shaft 2 carrying the turntable 3. Secured to the support 1 are two bolts 4, which depend from the support 1 and have two plates ,5 secured thereto. On the central shaft 2 is a sleeve 6 having a plate 7 secured to or formed integral withthe same a the top thereof. This plate has a lurality of-h0les 10' punched'therein and isposed' in a circle, as indicated in Fig. 2. A Winding-shaft 8, adapted to be actuated by a suitable handle, has, a gear-wheel 9 secured thereto with its teeth adapted to enter the holes 10 in the. disk? and rotate the latter when the winding-handle is actuated.

Loosely mounted on the sleeve dis a sec- 15, and the other end secured to the box 12 by a pin 16. On the sleeve 11 is a springbox 17 adapted to turn freely relatively to the sleeve 11, and within this box 'is a similar spring 18 having one end secured to the box and the other end secured. to the sleeve 11.

- To the bottom of the spring-box 17.is secured a gear 19 adapted to turn loosely upon the sleeve 6 on which it is mounted. ThlS gear 19 meshes with a pinion 20 which is loosely mounted upon a shaft 21 secured to the bottom-plate 5. Secured to or formed rintegral with the pinion 20 is a gear 22,

which ,meshes with a pinion 23 secured to the central shaft 2.

In the bottom-plate 5 is a threaded openmg having an adjustable threaded bushing 24 therein, and the adjacent faces of this bushing 24 and the pinion 23 are formed to provide a ball-race adapted to receive a plurality of balls forming a ball-bearing for the shi1ft2.

It will be seen that when the turntable is released, the spring 14 will act to turn the spring-box 12' and the sleeve 11 upon the sleeve (hand that the spring 18 Wlll similarly act to tern the spring-box l7 and the gear 19 seczned applied to the gear 19 is the combined power of the two springs 14 and 18 acting in series. The rotation of gear 19 is transmitted to the central shaft through the gears 20,22 and 23. When the springs have become partially unwound, they may be again wound up by operating the shaft 8 by means of its handle. Turning shaft 8 thus operates to turn the disk 7,-and with it the sleeve 6, thus winding the spring 14 and causing the springbox 12 and sleeve 11 to rotate sufficient to wind the spring 18.

In order to properly regulate the speed at which the turntable will be rotated, a centrif= ugal governor is provided. As shown in Fig. l, the'central shaft 2 is extended below the bottom-plate 5 and carriesa spiral gear 26 meshing with a spiral pinion 27 on a horizontal shaft 28. This shaft is supported in bearings formed .in arms 29 depending from the bottom-plate 5. Secured to shaft 25 v 37 is in the form of a sleeve 11 adapted to receive a pin 12.,This pm is caused to 1 tained in a suitable balliace. 20

28 is a collar 30, and a collar 31 is loose on the shaft. These two collars are connected by leaf-springs 32, each carrying a weight 33. As the shaft 2 is rotated by the motor, the shaft 28 will be correspondingly rotated and the weights 23 will move outwardly in accordance with the speed of rotation. This causes the collar 31 to be moved axially on shaft 28, and a disk 34 secured to the collar 31 will coact-With the brakelever in 'a manner common in the art.

Referring to Fig. 3, a modification of the arrangement of the governor is shown-- In this figure, the central shaft 2 carries a large move axially within the sleeve 41 by the movement of the Weights 33.

Having now described my invention, what 'I clann'as new thereinand desire to -secure -by Letters Patent is as follows A spring'motor comprising the combination of a power-shaft, a sleeve loose thereon, a toothed winding-gear on said sleeve, a winding pinion engaging said gear, a second sleeve loosely mounted upon said sleeve, a spring having its inner end connected to said first-named sleeve, a member connecting the outer end of the spring to said second sleeve, :1 second spring connected at one end to said second sleeve, a gear concentric with said sleeve, means for conneotingthe other end of said second sprin .to said gear, an auxiliary shaft driven. y said last-mentioned gear, and intermeshing gears on. the power-shaft and said auxiliary's'hafhsubstantially as set forth.

This specification signed andw itnessed this 5th day of February, 1910.

- JAMES A. RABBITT. W'itnesses GENJI KURIBARA,

v Masa'mno OKASAVA. 

